Sour gas injection for use with in situ heat treatment
AssigneeShell Oil Company
InventorThomas David Fowler
Life of this patent
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Abstract
Systems, methods, and heaters for treating a subsurface formation are described herein. At least one method for providing acidic gas to a subsurface formation is described herein. The method may include providing heat from one or more heaters to a portion of a subsurface formation; producing fluids that include one or more acidic gases from the formation using a heat treatment process. At least a portion of one of the acidic gases may be introduced into the formation, or into another formation, through one or more wellbores at a pressure below a lithostatic pressure of the formation in which the acidic gas is introduced.
Claims19
1-1123. (canceled)
A method for providing acidic gas to a subsurface formation, comprising:
- providing heat from one or more heaters to a portion of a subsurface formation;
- producing fluids from the formation using a heat treatment process, wherein the produced fluids comprise one or more acidic gases;
- and
- introducing at least a portion of one of the acidic gases into the formation, or into another formation, through one or more wellbores at a pressure below a lithostatic pressure of the formation in which the acidic gas is introduced.
A method for providing acidic gas to a subsurface formation, comprising:
- providing heat from one or more heaters to a portion of a subsurface formation;
- producing fluids from the formation using a heat treatment process, wherein the produced fluids comprise one or more acidic gases;
- removing at least a portion of carbon dioxide from the acidic gases;
- introducing at least a portion of the carbon dioxide into the formation, or into another formation, through one or more wellbores;
- and
- introducing a fluid in the wellbores used for carbon dioxide introduction to inhibit corrosion in the wellbores.
1141-1651. (canceled)
Dependencies are inferred from the claim text.